She brought you into this world — and by 32 years old, you’ll be exactly like her.

That’s the magic age when most women morph into their mother and begin acting like the woman who made them — a mommy-is-me transformation that includes adopting her pet phrases, worries and style of treating romantic partners, according to a new poll.

Many respondents reported picking up on maternal idiosyncrasies like watching soaps, becoming overly opinionated and stockpiling on groceries by age 32, according to the Hallmark UK poll of 1,000 people.

“At 32, most women have a child or are thinking about having a child and they become what their mothers were,” said behavioral expert Joachim de Posada, author of “Don’t Eat the Marshmallow Yet!”

“When you’re young, you want to break free. Then life starts and you realize your mother’s advice makes sense.”

To that end, men and women are often taking their mother’s advice quite literally.

Some 40 percent of the women polled reported regularly using stock phrases favored by their moms to their own kids — like “sit up straight” and “pull your hair back.”

A quarter of the male respondents said they, too, resorted to “momerisms.”

“Sometimes, I’m like, ‘Oh my God, I sound just like my mother!’ ,” said Rosemarie Santulli, 47, a homemaker from Long Island. Her transformation took off when her daughter started wearing clothes she didn’t approve of.

“I find myself saying, ‘Leave something to the imagination’ and ‘Cover up,’ which is what my mom said to me,” she said.